package com.haynes.meetxiaohai.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.haynes.meetxiaohai.common.BaseContext;
import com.haynes.meetxiaohai.common.CustomException;
import com.haynes.meetxiaohai.entity.*;
import com.haynes.meetxiaohai.mapper.OrdersMapper;
import com.haynes.meetxiaohai.service.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

/**
 * @Author Haynes
 * @Date 2023/3/26 19:17
 * @PackageName:com.haynes.reggie.service.impl
 * @ClassName: OrdersServiceImpl
 */
@Service
@Slf4j
public class OrdersServiceImpl extends ServiceImpl<OrdersMapper, Orders> implements OrdersService {
    @Autowired
    private ShoppingCartService shoppingCartService;
    @Autowired
    private UserService userService;
    @Autowired
    private AddressBookService addressBookService;
    @Autowired
    private OrderDetailService orderDetailService;

    @Override
    @Transactional
    public void submit(Orders orders) {
//        获取当前用户ID
        Long uid = BaseContext.getCurrent();
//        查询用户的购物车数据
        LambdaQueryWrapper<ShoppingCart> shoppingCartQueryWrapper = new LambdaQueryWrapper<>();
        shoppingCartQueryWrapper.eq(ShoppingCart::getUserId,uid);

        List<ShoppingCart> shoppingCartList = shoppingCartService.list(shoppingCartQueryWrapper);
        if (shoppingCartList==null || shoppingCartList.size()==0){
            throw new CustomException("购物车数据不能为空!");
        }
//      创建订单ID
        Long orderId = IdWorker.getId();

        AtomicInteger amount = new AtomicInteger(0);
//        设置订单明细表数据和计算价格

        List<OrderDetail> orderDetailList= shoppingCartList.stream().map((item)->{
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
//            计算价格 菜品单价*菜品数量
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());

//        查询用户数据
        User user = userService.getById(uid);
//        查询用户地址数据
        AddressBook addressBook = addressBookService.getById(orders.getAddressBookId());
        if (addressBook==null){
            throw new CustomException("收货地址不能为空!");
        }
//        向订单表插入数据一次一条
        orders.setId(orderId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amount.get()));//总金额
        orders.setUserId(uid);
        orders.setNumber(String.valueOf(orderId));
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                + (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));

            this.save(orders);
//        向订单明细表插入数据一次多条
        orderDetailService.saveBatch(orderDetailList);
//        清空购物车数据
        shoppingCartService.remove(shoppingCartQueryWrapper);
    }

    @Override
    public void updateOrderStatusById(Orders orders) {
        LambdaQueryWrapper<Orders> ordersLambdaQueryWrapper = new LambdaQueryWrapper<>();
        ordersLambdaQueryWrapper.eq(orders!=null,Orders::getId,orders.getId());

        Orders one = this.getOne(ordersLambdaQueryWrapper);
        if (one!=null){
            one.setStatus(orders.getStatus());
            this.updateById(one);
        }
    }
}
